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Left bundle branch pacing (LBBP) provides electrical and mechanical synchrony at low and stable pacing output and effectively corrects distal conduction system disease. The criteria for differentiating LBBP from LV septal pacing has not been validated in large trials. There are several electrocardiography-based and intracardiac electrogram-based criteria to confirm LBB capture. In this section, the authors review these criteria and their overall accuracy.
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http://dx.doi.org/10.1016/j.ccep.2021.12.011 | DOI Listing |
J Cardiothorac Vasc Anesth
August 2025
Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH.
Heart Rhythm
September 2025
Montefiore-Einstein Center for Heart and Vascular Care, Montefiore Medical Center, Bronx, NY, USA.
Background: During left bundle branch area pacing (LBBAP), several markers of electrical synchrony, (V6 R-wave peak time (RWPT), aVL-RWPT, and the V6-V1 interpeak interval), are commonly used to assess left bundle branch (LBB) capture. Nevertheless, the relationship between these electrocardiographic (ECG) measurements and mechanical synchrony remains poorly understood.
Objective: We aimed to analyze the association between electrical parameters from the paced QRS complex and mechanical performance assessed through 2D strain and myocardial work (MW) indices, following LBBAP implantation.
Heart Rhythm
September 2025
Electrophysiology Unit. Cardiovascular Division. Hospital del Mar. Passeig Maritim de la Barceloneta. Barcelona. Spain; Department of Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain.
Ann Noninvasive Electrocardiol
September 2025
Azrieli Faculty of Medicine Bar Ilan University, Safed, Israel.
Objective: To investigate two conditions that have been poorly investigated in the medical literature before in the context of atrial fibrillation: the coexistence and association of right or left bundle branch block and axis deviation in patients with permanent atrial fibrillation compared to the control group of healthy subjects with sinus rhythm.
Material And Methods: We conducted an analytic, retrospective observational study performed at Ziv Medical Center, Safed, Israel, collecting data from medical history records of all patients that have been diagnosed with permanent atrial fibrillation versus healthy controlled patients with normal sinus rhythm. We analyzed their ECGs in order to assess the presence of any bundle branch block and/or axis deviation.